I am fairly new to music and computers so I really can not give you much of a recommendation. I have owned a PSR 510 for a couple of months and purchased it for around $350.00 used. One thing that i have noticed is that i can not find anything more about the 510 then what is in the manual that comes with it. None of the music catalogues show a 510 and Yamaha's home page does not list it. Yamaha lists the 410, 510 etc. All the cataolgues i have have listed the 500 and the 520 but no 510. I have written to Yamaha asking about this situation and am waiting for a reply. I like my keyboard and have no complaints yet but if i were to buy again i would look for a more popular model. Good luck with your decision. If you have any more information i would welcome a response.